Não informado. (1973). Bulletin of the Pan American Health Organization. Pan American Health Organization.
Cita Chicago Style (17a ed.)Não informado. Bulletin of the Pan American Health Organization. Washington: Pan American Health Organization, 1973.
Cita MLA (8a ed.)Não informado. Bulletin of the Pan American Health Organization. Pan American Health Organization, 1973.
Precaución: Estas citas no son 100% exactas.